A person once told me that the performance rating from one coil manufacturer should be the same as another coil manufacturer for the same length, height, number of rows and find per inch of coil.
This statement would be valid if a generic overall heat transfer coefficient were applicable and the construction of both coils was identical
The truth is that each coil manufacturer used a different tube size, different tube spaces and many more design and manufacturing parameters. Alteration of these parameters do tend to alter the overall heat transfer coefficient and area function. Therefore a generic overall heat transfer coefficient can not be applicable when comparing the performance rating of a condenser or direct expansion cooling coil.
Michael Young is a mechanical engineer by trait and is the managing director of M & Y Consultants and Trainers. He helps young engineers grow within the mechanical engineering industry through his workshops and coaching packages. His vision is to provide knowledge to young engineers so we can help the industry grow